Screen not working

My business partner's treo screen stopped working after it jumped out of his hands to the garage floor. I ordered up a new screen and replaced it, but still nothing. Neither screen is cracked, just no backlight. When I power up the phone after inserting the battery, the status light is red/amber stays on for about 10 seconds, is that telling me something?

Any other hard reboots or something other that I can try? I can make phone calls with it, as long as I remember the squence. The phone sits here in 6 pieces waiting for a guru to suggest something other than a new 700p.